I wasn't aware the "raid gear" you bought in the cash shop was the best in slot..oh wait, it wasn't, you got the best gear in the game from actually doing the raids, also you might try reading a bit better, i didn't say anywhere
you called earring slots P2W.
On hindsight it might have been the better idea to have charged for Nightmare Tide and done, but they tried to give it away for free and charge for some items, it didn't work so now it's back to paying for an Expansion, i can't make it anymore clearer than that.
You make it sound like what was at launch was the entire Expansion and that's it, no more content for another 2 years or when ever 5.0 is launched